80% of flights arrived on time in April 2025, and 0.8% were cancelled. Spirit Airlines was the most punctual airline (83%); Frontier Airlines was the least (73%). The most delayed busy route was ATL → EWR (51% on time).

Airlines

#	Airline	Flights	On time	Year earlier	Cancelled
1	Spirit Airlines	18,303	83%	81%	0.4%
2	Delta Air Lines	133,985	82%	85%	0.5%
3	JetBlue	20,002	82%	76%	0.2%
4	Alaska Airlines	33,570	82%	79%	0.5%
5	Hawaiian Airlines	6,559	81%	84%	0.9%
6	United Airlines	118,694	81%	81%	0.7%
7	Southwest Airlines	117,622	80%	80%	0.5%
8	Allegiant Air	10,926	79%	86%	0.1%
9	American Airlines	166,972	76%	78%	1.6%
10	Frontier Airlines	17,451	73%	69%	1.2%

Most delayed routes

Route	Flights	On time
ATL → EWR	481	51%
IAD → EWR	151	53%
DFW → CLT	308	55%
DFW → BWI	127	57%
RDU → EWR	198	58%
CLT → EWR	279	58%
ABQ → DFW	208	58%
EWR → CVG	134	59%
DFW → CMH	146	60%
ORD → EWR	502	60%
SGF → DFW	235	60%
DFW → EWR	262	61%
SGF → CLT	120	61%
LIT → DFW	235	61%
DFW → ABQ	207	61%
MCI → DFW	205	61%
DFW → MCO	378	61%
DFW → MCI	204	61%
ASE → DEN	250	62%
DFW → PNS	146	62%

Most reliable routes

Route	Flights	On time
OGG → SFO	121	97%
DAY → ATL	120	96%
BOI → LAX	135	96%
SEA → MSP	197	95%
ALB → BWI	123	95%
SNA → PDX	120	95%
CLE → BOS	133	95%
LAX → ABQ	203	95%
OAJ → CLT	165	95%
AUS → IAD	120	94%
KOA → OGG	120	94%
GEG → SLC	152	94%
GEG → PDX	146	94%
BUF → MCO	207	94%
PDX → LAX	361	94%
ABQ → LAX	203	94%
LAX → KOA	125	94%
BOI → PDX	150	93%
PDX → BOI	150	93%
PDX → SNA	120	93%

Airports

Airports with at least 3,000 departures in the month, most punctual first.

#	Airport	Departures	On time	Cancelled
1	PDX Portland	5,902	86%	0.3%
2	SFO San Francisco	12,592	86%	0.3%
3	SJC San Jose	3,948	85%	0.3%
4	OAK Oakland	3,163	85%	0.3%
5	SMF Sacramento	5,082	85%	0.3%
6	LAX Los Angeles LAX	16,163	85%	0.3%
7	HNL Honolulu	4,851	84%	0.7%
8	SLC Salt Lake City	9,518	84%	0.2%
9	CLE Cleveland Hopkins	3,814	84%	0.9%
10	PIT Pittsburgh	3,899	84%	0.6%
11	IND Indianapolis	4,309	83%	0.8%
12	SEA Seattle-Tacoma	14,434	83%	0.2%
13	CMH John Glenn Columbus	4,021	82%	0.9%
14	SJU San Juan	3,121	82%	0.4%
15	SNA Orange County John Wayne	3,761	82%	0.7%
16	IAD Washington Dulles	8,289	82%	0.3%
17	FLL Fort Lauderdale	7,833	82%	0.5%
18	MDW Chicago Midway	6,051	82%	0.5%
19	RSW Southwest Florida	3,711	82%	0.8%
20	PHX Phoenix Sky Harbor	18,197	81%	0.4%
21	SAT San Antonio	3,659	81%	1.2%
22	RDU Raleigh-Durham	5,159	81%	0.7%
23	JFK New York JFK	10,271	81%	0.3%
24	IAH Houston Bush Intercontinental	13,699	81%	0.5%
25	MCO Orlando	14,194	81%	0.4%
26	DTW Detroit Metro	11,454	81%	0.6%
27	LAS Las Vegas Harry Reid	16,196	81%	0.4%
28	MCI Kansas City	4,186	80%	0.8%
29	STL St. Louis Lambert	5,775	80%	0.7%
30	MSP Minneapolis-St. Paul	10,501	80%	0.3%
31	BOS Boston Logan	12,517	80%	0.3%
32	AUS Austin-Bergstrom	7,326	80%	0.7%
33	TPA Tampa	7,297	80%	0.8%
34	BWI Baltimore/Washington	8,133	80%	0.3%
35	MSY New Orleans	4,537	80%	0.9%
36	SAN San Diego	8,103	80%	0.6%
37	PBI President Donald J. Trump	3,033	79%	0.5%
38	ORD Chicago O'Hare	28,808	79%	1.3%
39	BNA Nashville	9,019	79%	0.9%
40	HOU Houston Hobby	4,624	79%	0.6%
41	LGA LaGuardia	14,000	78%	0.5%
42	PHL Philadelphia	10,802	78%	0.5%
43	CVG Cincinnati Northern Kentucky	3,705	78%	0.9%
44	DCA Washington Reagan National	12,394	77%	0.9%
45	MIA Miami	9,878	76%	0.8%
46	ATL Atlanta Hartsfield-Jackson	28,815	76%	0.9%
47	CLT Charlotte Douglas	20,606	76%	0.6%
48	DEN Denver	25,280	74%	0.6%
49	DAL Dallas Love Field	6,067	74%	2.1%
50	EWR Newark	10,194	73%	1.8%
51	DFW Dallas/Fort Worth	25,733	67%	3.4%

Routes need 120+ flights in the month to be ranked (1,845 were). Figures as published by BTS; frozen 2026-08. Method.

April 2025 report

Airlines

Most delayed routes

Most reliable routes

Airports